New York TimesThe Kilogram is Dead. Long Live the Kilogram!New York TimesSince 1889, Le Grand K, a sleek cylinder of platinum-iridium metal, has ruled from its underground vault in Paris. An absolute monarch, it was the very definition of one kilogram of mass. Scientists from around the world made pilgrimages to it ...Historic vote to redefine the kilogram changes forever the way we measure massNBCNews.comKilogram gets a new definitionBBC NewsScientists say goodbye to physical definition of the kilogramThe VergeThe Mercury News -Business Insider -The Economist -BBC Newsall 122 news articles »